Pellaea truncata Goodd.

  • Authority

    Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.

  • Family

    Pteridaceae

  • Scientific Name

    Pellaea truncata Goodd.

  • Description

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    Species Description - Rhizomes compact, ascending, 5–10 mm diam.; rhizome scales linear-subulate, bicolorous, black with brown, erose-dentate margins; fronds somewhat dimorphic, sterile shorter and less divided than the fertile, 10–40 cm long, clumped; stipes ca. 1/3 the frond length, castaneous to dark brown, lustrous, adaxially flattened or shallowly grooved, glabrous or nearly so; blades ovatedeltate, bipinnate, 5–18 cm wide; rachises straight, glabrous; pinnae 5–8 pairs of divided pinnae; ultimate segments narrowly oblong, 4–10 mm long, coriaceous, glabrous, apices mucronate; adaxial and abaxial surfaces glabrous; sporangia 64-spored, mixed with farina; spores brown; 2n = 58 (USA).

  • Discussion

    Type. U.S.A. Arizona: Cochise Co., Mule mountains, in dry rocky places, Goodding 977 (US!).

    Unverified, Doubtful, or Mistaken Reports. Chih (Correll 23306, cited by Knobloch & Correll, 1962, without herbarium, not verified). Pellaea truncata crosses with P. wrightiana in areas of overlap, and the hybrids can be distinguished by their malformed spores.

  • Distribution

    Cliffs and rocky slopes, on various substrates but rarely observed on limestone; 500–1650 m. W USA; Mexico.

    México Mexico North America|